// https://developers.google.com/admin-sdk/directory/v1/languages
/// <summary>
/// Transcribes the specified URL.
/// </summary>
/// <param name="url">The URL.</param>
/// <param name="languageCode">The language code.</param>
/// <returns></returns>
public async Task <TranscriptionViewModel> Transcribe(string url, string languageCode = "en-US", List <string> altLanguages = null)
{
// Initialize GA Speech Client
Channel channel = new Channel(
SpeechClient.DefaultEndpoint.Host, _googleCredential.ToChannelCredentials());
SpeechClient speech = SpeechClient.Create(channel);
RecognitionAudio audio = await RecognitionAudio.FetchFromUriAsync(url);
RecognitionConfig config = new RecognitionConfig
{
Encoding = AudioEncoding.Linear16,
LanguageCode = languageCode,
};
if (altLanguages != null)
{
foreach (string altLang in altLanguages)
{
config.AlternativeLanguageCodes.Add(altLang);
}
}
RecognizeResponse response = speech.Recognize(config, audio);
string transcript = "";
float confidence = 0f;
string language = "";
// Parse results
foreach (var res in response.Results)
{
// Take only the highest confidence transcription
foreach (var alternative in res.Alternatives)
{
if (alternative.Confidence > confidence)
{
transcript = alternative.Transcript;
confidence = alternative.Confidence;
}
}
language = res.LanguageCode;
}
await channel.ShutdownAsync();
return(new TranscriptionViewModel()
{
Transcript = transcript, Confidence = confidence, Language = language
});
}
public async Task FetchFromUriAsync_Uri()
{
var audio = await RecognitionAudio.FetchFromUriAsync(new Uri(IconUri));
Assert.Equal(IconContentSize, audio.Content.Length);
}
